net/virtio: fix link state interrupt vector setting

[ upstream commit efc3f842b3dd69c4e65dbdf6cdaccde8c759b5d9 ]

Setting the vector for link state interrupts should be
done before the device initialization is completed.

Fixes: ee85024 ("net/virtio: complete init stage at the right place")

Signed-off-by: Wenwu Ma <wenwux.ma@intel.com>
Tested-by: Wei Ling <weix.ling@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

drivers/net/virtio/virtio_ethdev.c

@@ -1924,6 +1924,14 @@ virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
 		}
 	}
 
+	if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
+		/* Enable vector (0) for Link State Interrupt */
+		if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
+				VIRTIO_MSI_NO_VECTOR) {
+			PMD_DRV_LOG(ERR, "failed to set config vector");
+			return -EBUSY;
+		}
+
 	vtpci_reinit_complete(hw);
 
 	if (pci_dev)
@@ -2408,14 +2416,6 @@ virtio_dev_configure(struct rte_eth_dev *dev)
 	hw->has_tx_offload = tx_offload_enabled(hw);
 	hw->has_rx_offload = rx_offload_enabled(hw);
 
-	if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
-		/* Enable vector (0) for Link State Interrupt */
-		if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
-				VIRTIO_MSI_NO_VECTOR) {
-			PMD_DRV_LOG(ERR, "failed to set config vector");
-			return -EBUSY;
-		}
-
 	if (vtpci_packed_queue(hw)) {
 #if defined(RTE_ARCH_X86_64) && defined(CC_AVX512_SUPPORT)
 		if ((hw->use_vec_rx || hw->use_vec_tx) &&